Bolt cutting and pointing machine.



A. B. LANDIS. BOLT CUTTING AND POINTING MACHINE.

APPLICATION FILED OCT. 7, 1905.

Patented Feb. 8, 1910.

BSHEETSQSHEET 1.

v MN A. B. LANDIS. BOLT CUTTING AND POINTING MACHINE.

APPLICATION FILED OCT. 7, 1905.

Patented Feb. 8, 1910.

3 SHEETS-SHEET 2,

A. B. LANDIs; BOLT CUTTING AND POINTING MACHINE.

APPLICATION FILED OCT. 7, 1905.

eat-5,885.

A'rns PATENT OFFICE.

ABRAHAM B. LANDIS, OF WAYNE SBORO, PENNSYLVANIA.

BOLT CUTTING AND POINTING MACHINE,

Specification of Letters Patent.

Patented Feb. 8, 1910.

Application filed October 7, 1905. Serial No. 281,812.

To all whom it may concern:

Be it known that I, Alumna in B. Lamas, a'citizen of the United States,'residing at Waynesboro, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvemtmts in Bolt Cutting and Pointing Machines, of which the following is a specification.

My said invention consists in certain iinplOVGl'llelll'S in'the construction of machines vfor cutting threads on bolts, screws, etc.,

whereby the bolt may also be pointed by the same maehme and wlthout removing it, and other detail improvements provided, all as claimed.

Referring to the accompanyu'ig drawings which are made a part hereof and on which 511111131. reference characters indicate snnllar parts, Figure 1 is 5. side elevation of a bolt cutting ma chine ei'nbodying my said unprovements, a 'iortion of one side being broken away showing parts in section in order that the constructlon may be more clearly illus- .trated, Fig. 2 a similar view with the bolt pointing mechanism .111 another position and still more of the side of the machine broken away to show the interior construction, Fig. 3 a cross section looking in the direction indicated by the arrows-from the dotted line 33.in Fig. 2, Fig. 4 a longitudinal section on-the .dotted line t-4; in Fig. 3, Fig. 5 a section on thedotted line 5-5 in Fig. 4, and Figs. 6 to 12, inclusive, detail views of separate partsofthe mechanism, illustrating their form and construction more clearly.

In said drawings the portions marked A represent the frame or body of the machine,

The frame A is preferably of cast-.metal,

B the cutter-head, C the bolt holding and feeding carriage and D the pointing device.-

hollow and of suitable size and form to support the several parts of the mechanism and afford suitable bearingsand ways for the I be hereina ter more fully described.

- concurrently herewith.

operative arts of the machine, all as will The cutter-head B is or may be of any ap- )roved construction such as shown in my ormer Letters Patent No. 690,300, 409,208 or in my application No. 281,81rl'pending It is mounted upon a hollow spindle 1, which is mounted in suitable bearings in brackets a and. a on the top of said frame and has a gear 2 on its outer end which meshes with'a pinion 3 on the driving shaft 4 of the machine. It carries the cutter-holders B containing the cutters blocks C forming the cutter-die and adapted to be opened and closed as shown in said patents or the a 'iplication before referred o.

The means for opening and closing the cutter-die is substantially the same as that shown iuuiy co-pending application No. 281 .814. consisting of the lever 1.4: and the operating mechanism connected therewith which will be hereinafter briefly referred to in describing the operation of the machine.

The bolt holding and feeding carriage (I c onsi ts of a suitable casting mounted upon longitudinal ways on the body or frame of the machine. It has two transversely sliding blocks (1' and mounted in suitable ways therein and provided with rectangular recesses in their adjacent faces in which are mounted the holding jaws c and 1: provided with serrated notches in their adjacent faces, adapted to clamp and hold the bolt. Said jaws may be providcd"\\'itl1 such notches in each of their four sides, as shown in Fig. 5, and'bc thus adapted to hold bolts of different.

, sizes, or to be turned to bring different holding faces into operative position when one or another may have been worn to unfit theln for use. They are held in position by setscrews c mounted in suitable screw-threaded perforations in the blocks C and C See Fig. 5. The lower edge of each of the blocks C and (l is formed concave in cross-section and has screw threads (.2 cuttherein, as best. shown in F ig. 6, which is a perspective View of one of said blocks turned upside down. A transverse perforation is provided through the carriage C beneath the loweredge of said blocks C and C and a red C formed with a right-hand screw-thread on one end and a left-hand screw-thread on its opposite end, with tLSlnOOth portion in the middle between said scrcw threaded portions, is mount ed in said perforation, said screw-threads being adapted to engage with the respective and C Said rod C is held in position by a short split. sleeve C mounted on said rod between the two collars c and 0'' located one at the inner end of each of the screw-threaded portions. Said sleeve is provided with a V-sliaped groove 0 with which a set-screw 0" mounted in the front of the block 0 (see Fig. 4) is adapted to engage and lock said collar and thus lock said screwthreaded red C in position. A hand-wheel C is mounted on the outer end, of said rod 0 by which it may be turned and the blocks Hit] C and C thus operated toward or from each other to clamp or release a boltplaced be tween the jaws o and a, as will be readily understood. Said carriage O is provided near its rear end with a transverse shaft C mountedin suitable bearings and having a gear-wheel or pinion c mounted thereon, which is adapted to engage with a lon i tudinal rack-bar C secured rigidly to t e frame A. A hand-wheel c is mounted on the outer end of said shaft by which it may be turned and the carriage C thus moved back and forth on the ways upon which it is head B and in the spindle 1 upon which said.

cutter-head is mounted, suitable bearings beingformed for said rod in said pa'rts through which it is adapted to slide back andforth. A collar d is mounted rigidly upon the rear end of said rod and a vertical lever D is pivotally connected at its upper end to said -collar. Said lever I) is pivoted at its lower end on a pivot 01 to the outer end of an arm D which is connected to the frame A by means of a ivot 0 1" extending through cars a on the si e of said frame, as shown. The lower end D of said lever D? is turned to a position-at right angles with the main part and is provided with a set-screw d, which, is adapted to strike against the under sideot the arm D and limit the movement of said lever and thus adjust the length of the throw of i s upper end.

A spring D is mounted on the to of arm ID and adapted to bear a ainst t e front edge of lever .D and normally tend .to throw said lever from the position shown in 'F i 2 to that shown in Fig. 1. Said lever D 18 formed at a point near its u per end with an opening in which a sleeve l) is mounted on plvots d, which permit said slee'vetorevmain in a horiz'ontal'position regardless of the movements or the angles of said lever. A rod D is mounted said sleeve at this end and at its 0 posite end is rigidly secured in a downwardly projecting arm G on the carriage C being secured byja clamping screw 0 which extends through flanges on each side of a split in the side of the wall of the perforation through which said rod passes. Said rod is thus made to move with said carriage. It is provided with a latch d, mountedin a slot therein on a pivot (i the engaging point of said latch being adapted to engage with the rear end of the sleeve, D where the lever and rod are brought to the position shown in Fig. 2. Another latch A is mountedon a projecting part a otthe frame A b means of a pivot a being held in a substantlally horizdntal position by means i of a spring a between said projecting part and the heel h of said latch. The catch a of said latch is adapted to engage with a transversely extending latch-pin (Z on the side of lever D Said latch A has an up wardly extending arm a" with a tapered or cam-shaped top adapted to engage with a tapered shoulder-s in the rod D. A" set-screw a is mounted in an upper part of the projection a and adapted to contact with the upper projecting. end (1 of the pivoted latch 03.

The operation of the-machine is as tollowsfWhen the parts are in the position shown in Fig. 1 the cutter-die is closed and the parts are in osition to cut the threads upon the bolt, w hich is done in the usual manner. The carriage G is fed forward and carries with it the rod 1) until said carriage has reached the position where the arm 10 thereon will strike the nut 11' on the screw rod 12 and release the latch 13 from enga e ment'with the lever 14, which permits t e spring 15 to pullback the lower end of said lever l t-by means of its pivoted connection with the rod 16 and allow the cutter-die to open. At the same time the rod D has been carried to thepoint where the latch Z will have passed through the collar 1) in the lever D and its point will have engaged with the outer end of said collar, locking said lever 1) to said rod D and through it to the carriage 0. Thus as the carriage ismoved back said lever D and the rod 1) connected therewith, carrying the point cutting die, is

drawn forward until it reaches the position shown iIiFig. 2 with said point cutting-die extending through the cutter-head, the die of which is then open. At the same timethe latch A will engage with the latch-pin d of lever D and lock said lever and the point cutting-die securely in this position. The carriage is then run back until the end of the bolt comes within the point cuttingsdie D and is pointed by the rotation of said die,

which operation does not disturb the positions of the several parts. When the operation of pointing is completed the carriage is again run back to a point where the arm 10 thereon will strike the nut 17 on the rod 16 and through'it draw the lever 1.4 'ba-ck'to a position to operate the cam-ring B to close the cutter-die, when the latch 13 will fall into engagement over the latch pin on. said lever 14 and lock said parts in position to cut the thread upon the next bolt. Just before the carriage Chas reached the position to close the thread cutting-die the tapered shoulder s on the rod 1) comes in contact with the tapered top of the arm a of the latch A and forces said latch out of en-tiso' secure by Letters Patent, is

upon a hollow spindle, the work holding and said pointing. dic, said means, means coni with the front end of collar D. The spring thrown out of the way of the operation of the thread die, means for opening and closggrgcment with the latch pin d of the lever The upper projecting end ai of the latch (Z also passes under the lower end of set-screw a and is forced down so as to raise its opposite end (1 out of engagementl) then operates to throw said lever D from the position shown in Fig. 2 to that shown in Fig. 1, this movement being limited by the set-screw d. Said point cutting-die is thus the thread cutting mechanism.

The operation of cutting the thread and pointin the bolt is thus alternately and continuously performed by the same machine and without removing the bolt therefrom until both operations have been completed, thus securing an improved product by an economical method.

Having thus fully described my said invention, what I claim as new and desire to '1. In a bolt cutting and pointing machine, the comlnnation of the cutter-head formed with a central perforation and mounted feeding carriage, the pointing die or cutter mounted to reciprocate within the cutterhcad and mechanisms connected. with and operated by said work-holding and feeding carriage for extending said pointing die through the cutter-die of said cutter-head when the same is open, in position for pointing the bolt, substantially as set forth.

2. in a bolt cutting and pointing machine, the combination of the cutter-head carrying the thread cutting die, mechanism for opening and closing said die, a pointing die mounted to YOClPI'OCtItB in a central perforation in said cutter-head and extended through the thread cutting die, when it is open, in position to point the bolt, means connected with the work-holding and feeding carriage for reciprocating said die, means for holding said pointing die in operative position, means for withdrawing said pointing die to within the cutter-head when the operation is completed, and thoavork holding and feeding carriage, substantially as set forth.

In a bolt cutting and pointing machine, the coml iimitiouof the cutter-head carrying ing said die, a pointing die mounted to reciprocalc within a central perforation in said ctdlenhcad. the work holding and feeding carriage, a connection extending from said carriage to a means for reciprocating net-ted with said carriage for operating the opening and closing mechanism of the thread cutting die, and means for locking 1 the dies alternately in their respective opcr- I ative positions and releasing them and returning them out of the way of the operation of the next. to be used, substantially as set forth.

4. In a bolt cutting and pointing'machine, the combination of the carriage, the cutterhead carrying the thread cutting die, mechanism for opening and closing said thread cutting die, a pointing die mounted to reciprocate within a central perforation in said cutter-head, means for holding said pointing die forward to extend through the thread cutting diein position to point the bolt, and means controlled by the carriage for with drawing said pointing die and closing the thread cutting die after the pointing operation is completed. substantially as set forth.

In a bolt cutting and pointing machine, the combination of the cutter-head carrying the thread cutting, die, mechanism for opening and closing said thread cutting die, the bolt holding and feeding carriage, a connection. from said carriage to the mechanism for o cniw and closirw said thread cuttin die, whereby as said carriage roaches one position said die is closed and locked and as it reaches another position said die will he opened, the pointing die mounted within a perforation in said cutter-head and connected with means for projecting it forward through the thread cutting die, when open, and locking it in position to point the bolt, said means and a connection between said means and said carriage whereby said pointing die is extended forward into operative position as the thread cutting die is opened and returned outof the way of said thread cutting die when its ope *ation is finished,

substantially as set forth.

6. In a bolt. cutting and pointing machine, the combination of the carriage, a cutterhead carryingthc thread cutting die,apointing die mounted in a central perforation in said cntter-heatl, and means controlled by the carriage for reciprocating said pointing die into and. out of operative position between the operations of said thread cutting die, substantially as set forth.

7. In a bolt cutting and pt'iinting machine, the combination of the cutter-head carrying the thread cutting die, the pointing die mounted in a central perforation in said out ter-head, means for opening and closing the thread cutting die, a pivoted lever connected with the rearcnd of the stem of the pointing die. and containing an aperture, the Work car1. \;'ing carriage, a rod rigidly connected with said carriage and containing an adjustable. latch adapted to extend through the aperture in said lever and engage with its outer face, whereby when the carriage is pulled back said lever will be drawn forward and said pointing die projected through the thread cutting die, a latch pivoted to the frame adapted to engage with a catch on said lever and lock itin position, means controlled by the carriage for releasoint with means for en 'a in and disenthe combination of the cutter-headcarrying the thread cutting die, means for opening and closing said thread cutting die, comprising an operating lever, a latch pivoted to the frame adapted to engage with a latch-pin i on said lever and hold it in position to lock said die closed, the Work holding and feed ing carriage, a connection between said work holding and feeding carriage and said lever, whereby said thread cutting die is opened and closed by the movements of said carriage, the pointing die mounted within a central perforation in said cutter-head; the 5 stem whereof extends through the hollow spindle of said cutter-head and is pivotally connected with a vertical lever pivoted at its lower end to a projection fromthe side of" the frame and provided at an intermediate gaging with a rod connected rigidly with said carriage, said rod being adapted to engage with said lever at the pointwhere the carriage-is in the position when the thread cutting operation is finished, whereby, as said carriage is hacked to carry the bolt out of the thread cutting die, the pointing die is brought forward to project through said thread cutting die after it is automatically opened by the mechanism connected wit said carriage, means for lockin said die in position, and means conne'ctec with said carriage for releasing said locking mechanism and permitting said pointing die to'return out ofv the way of thethread cutting die, substantially as set forth.

9. In a bolt cutting machine the combina-' tion with the various operating mechanisms of the carriage for holding and feeding the work comprising a block having a central recess with two sliding blocks mounted in transverse ways carrying the holding jaws and a screw-rod mounted in a transverse perforation in said carriage and formed with a right-hand thread upon one end and a lefthand thread upon the other'adaptedto engage with screw-threads 011 the under face of said sliding blocks, and means for holding said screw-rod in position comprising a sleeve mounted'upon a central smooth portion thereof between two collars and secured to the carriage by a transverse set screw, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Waynesboro, Pennsylvania this 8th day of September; A. D. nineteen hundred and five.- 1

'7 ABRAHAM B. LANDIS, [11. s5]

Witnesses T. S. CUNNINGHAM, BEN. F. LANDIS. 

